Flow Rate Calculator

The Flow Rate Calculator helps users compute volumetric and mass flow rates, as well as hourly and daily flow rates, in addition to determining the Reynolds Number for fluid flow based on cross-sectional area, fluid velocity, and density inputs in either metric or imperial units.

Use Our Flow Rate Calculator

Using the Flow Rate Calculator

This step-by-step guide will walk you through using the Flow Rate Calculator efficiently. Follow each step to input your data and interpret the results correctly.

Step 1: Input the Cross-sectional Area

  • Locate the field labeled “Cross-sectional Area”: This field requires you to input the area through which the fluid flows.
  • Enter the value: Make sure to input a numeric value greater than or equal to 0.0001. This field is required, so it cannot be left blank.
  • Use the placeholder: An optional guideline is available as a placeholder, “Enter area”, to remind you what value is needed here.

Step 2: Enter the Fluid Velocity

  • Find the field labeled “Fluid Velocity”: This prompts you to enter the speed at which the fluid travels.
  • Input the velocity: A numerical value greater than or equal to 0.0001 is required. Like the cross-sectional area, this is a mandatory field.
  • Use the placeholder: If necessary, refer to the placeholder text “Enter velocity” for guidance.

Step 3: Choose the Unit System

  • Select from the “Unit System”: Choose either Metric (m³/s) or Imperial (ft³/s). This selection is crucial for interpreting the results accurately.
  • Note: This is a required selection, so ensure you make a choice before proceeding.

Step 4: Provide the Fluid Density

  • Locate the field labeled “Fluid Density”: This requires the density of the fluid being measured.
  • Input the density: Enter a number greater than or equal to 0.0001. This is also a required input, so make sure to fill it in.
  • Use the placeholder: Follow the hint “Enter density” if you need a reminder of what to input here.

Step 5: Review the Results

  • Volumetric Flow Rate: Calculated as “crossSectionalArea * velocity”, it is displayed with four decimal places and the unit m³/s.
  • Mass Flow Rate: Derived from “volumetricFlowRate * fluidDensity”, shown with four decimal places and the unit kg/s.
  • Hourly Flow Rate: This shows the volumetric flow rate multiplied by 3600 to give a per-hour rate, formatted to two decimal places as m³/hr.
  • Daily Flow Rate: Provides the daily volumetric flow by multiplying by 86400, also formatted to two decimal places with the unit m³/day.
  • Reynolds Number: Calculated using the formula “(velocity * crossSectionalArea * fluidDensity) / (crossSectionalArea * 0.001)”, it is displayed as a whole number.

By following these steps, you will be able to successfully use the Flow Rate Calculator to determine a variety of flow rate metrics essential for fluid analysis.